SHIMANO Ultegra Di2 R8170 Groupset 2x12 | Crank length 170 mm 50-34T - SPECIAL OFFER
With this Ultegra, Shimano offers the perfect group for dedicated amateur riders. It comes with contemporary Di2 technology and 12-speed drive and probably offers the best price-performance ratio in the road bike sector. The many years of experience of the Japanese can be seen in the high functionality and quality. Now with the new Ultegra brake disc, you can get the complete group here at R2-BIKE.COM for a one-time special Price and in a beautiful box. Technically, the Ultegra Di2 is similar to its big sister Dura-Ace. The shift commands are transmitted wirelessly to the derailleur and rear derailleur. The latter are connected to a central battery, which can, for example, be installed well hidden in the seat post. The 12-speed drive was also adopted and allows for a larger gear ratio. This makes long climbs very pleasant, even for less trained drivers.
Shift|brake lever SHIMANO Ultegra Di2 ST-R8170 2x12-speed + disc brake BR-R8170
Flat Mount Thanks to the dual-control shift/brake lever, you have your bike under control at all times. The raised croissants offer various gripping options, so that hands and arms can regularly change their position and signs of fatigue are avoided. It is switched at the touch of a button. This is quick and energy-saving. The pressure point is so precise that unwanted switching operations are practically impossible. With the help of the Shimano E-Tube app, this wireless system can also be fully personalized. Among other things, the shifting speed can be set, a fully or semi-synchronous shifting mode can be selected and the program buttons on the lever can be assigned specific functions. The energy consumption is also very low. According to Shimano, the two CR1632 button cells should power the electronics for over 3 years. In addition, they can be exchanged quickly. The lack of wiring not only simplifies assembly for you, you also get a neat and tidy cockpit. When braking, you have optimal control over your bike at all times with the SERVO WAVE technology. This offers controllability and sufficient power that is second to none. But not only the inner values convince. The ergonomics have also been significantly improved. The recessed grip is better formed and the rounded brake handles lie securely under your fingers even on long descents. In addition, the grip width is individually adjustable. The completely redesigned Ultegra BR-R8170 caliper brings a new level of control and stopping power to the road bike world. The new design minimizes brake judder. In addition, despite its compact size, this system is quieter and more maintenance-friendly than ever before, so that work such as bleeding, for example, does not pose any major problems for a reasonably skilled biker.
Brake disc SHIMANO Ultegra Center Lock RT-CL800 | 160mm
When developing the Ultegra CL800 brake discs, Shimano engineers managed to prevent the discs from deforming due to heat. As a result, the CL800 discs offer more reliable, better controllable braking performance and are quieter than ever. Fortunately, the weight has remained at the low level of the previous version. Also on board is Shimano's Ice-Tech cooling technology, which ensures excellent heat dissipation and constant braking performance even on long, steep descents. The brake discs are characterized by a three-layer sandwich construction. Their stainless steel flanks with an aluminum core offer significantly improved heat dissipation. This allows the temperature to be reduced by around 100 °C. In addition, the FREEZA aluminum cooling fins reduce the system temperature by around a further 50 °C thanks to their increased surface area. Due to the higher heat dissipation, smaller brake discs than usual can be installed. In addition, the service life of the brake pad is significantly extended. As is typical for Shimano, the discs are suitable for center lock mounts, which enable quick and easy assembly, offer a secure hold and ensure a clean and compact look.
Crank SHIMANO Ultegra FC-R8100 50-34T teeth | 2x12 speed
The Ultegra crank not only converts your pedal power into propulsion, with its high rigidity it also ensures extremely fast and precise shifting. This is supported by the optimized tooth design of the chainrings. The latter also increase aerodynamics due to their integrated design. In order to keep the weight as low as possible, the Japanese continue to rely on the proven Hollowtech II design of the crank arms.
Front derailleur SHIMANO Ultegra Di2 FD-R8150 | 2x12 speed
The advantage of electronic shifting systems is particularly noticeable in the front derailleur. A push of a button and the chain moves from one chain ring to the other as if by magic, without any effort. It also thinks along and automatically adjusts its position to the chain skew in order to avoid grinding noises. With the help of the Shimano E-Tube app, the front derailleur is adjusted after installation and a manual, fully or semi-synchronous shift mode is selected depending on preference.
Rear derailleur SHIMANO Ultegra Di2 RD-R8150 | 2x12 speed
Gear changes have never been so quick. A push of a button and the chain changes from one sprocket to the other in fractions of a second, no matter what the situation. This is carried out by the powerful and reliable integrated motor. The system is also supplied with new energy via the rear derailleur. The charging cable is plugged into the small charging port and after about 1.5 hours you can swing back into the saddle. A small LED reliably shows the capacity that is still available. With the help of the Shimano E-Tube app, the rear derailleur is fine-tuned after installation and a manual, fully or semi-synchronous shift mode is selected depending on preference. The narrow Shadow profile reduces the risk of damage in the event of a fall.
Cassette SHIMANO Ultegra Cassette CS-R8100 | 12-speed 11-34 teeth
The Shimano Hyperglide cassettes have set new standards in off-road use with their smooth upshifting and downshifting across the entire range of gear ratios. For the Ultegra group, the Japanese have also adopted this technology for use on racing bikes. Even with the greatest effort on climbs or when sprinting to the finish line, you can now switch gears without hesitation. Longer teeth make this possible. Despite the new design and the additional 12th sprocket, the CS-R8100 cassettes are also compatible with previous 11-speed Shimano Road freewheel bodies.
Chain SHIMANO Ultegra CN-M8100 / Deore XT 12-speed | 116 links with chain lock
The CN-M8100 chain is specially designed for the 8100 chainrings and cassettes. The millings on the inside of the lugs harmonize perfectly with the Dynamic Chain Engagement+ (DCE+) Narrow-Wide tooth profiles of the new Ultegra chainrings. The design results in a tighter fit of the chain on the teeth. Vibrations are avoided and the smoother running of the chain is not only noticeable when pedaling, but is also expressed acoustically through a quieter drive. Thanks to a new chromed surface in combination with the proven SIL-TEC coating, the service life of the chain could be kept at the level of the M8000 chain, despite the smaller outer width.
Battery BT-DN300 internal
Integrated battery of the latest generation, which is sunk into the seat post or the steerer tube. The internally routed cables give the racing bike a tidy look. The integration of the battery into the frame also reduces the number of attachments that are exposed to the wind. To charge the battery, it can remain in the bike.
E-Tube cable SHIMANO for Di2 | EW-SD300-I internal
These cables connect all electrical components of the Shimano E-Tube system. They are used in the current Dura Ace Di2 9200 and Ultegra 8100 groupsets, among others. The more compact design allows the use of smaller, lighter electronic components and makes it much easier to route cables internally.
SHIMANO charging cable EW-EC300
With this charging cable you can charge the battery of your Shimano 12-speed gears via the charging port on the rear derailleur.
Technical specifications:
Material: aluminum, plastic
Gears: 2x12
Brake type: hydraulic disc brake
Brake Mount: Flat Mount, depending on the frame, an optional adapter may be required at the rear
Crankshaft: 24mm
Crank Length: 170 mm
Chainring gradation: 50-34 teeth
Chainring mount: 110 mm 4-arm | Shimano asymmetrical
Cassette gradation: 11-34 teeth
Compatibility freewheel body: Shimano 11-/12-speed road
Fastening front derailleur: soldering (clamp optionally available)
Battery life: about 2000 km
Color: black, silver
Weight according to manufacturer: n/a
Weight weighed: 2777g (ready to drive)
Scope of delivery:
1x SHIMANO switching | Brake lever Ultegra Di2 ST-R8170 2x12-speed + disc brake BR-R8170 Flat Mount front
1x SHIMANO switching | Brake lever Ultegra Di2 ST-R8170 2x12-speed + disc brake BR-R8170 Flat Mount rear, WITHOUT 160 mm adapter
2x SHIMANO brake disc Ultegra Center Lock RT-CL800 | 160mm
1x SHIMANO crank Ultegra FC-R8100 | 2x12-speed 170 mm 50-34T
1x SHIMANO front derailleur Ultegra Di2 FD-R8150 | 2x12 speed
1x SHIMANO rear derailleur Ultegra Di2 RD-R8150 | 2x12 speed
1x SHIMANO Cassette Ultegra CS-R8100 | 12-speed 11-34 teeth
1x SHIMANO chain Deore XT | Ultegra CN-M8100 12-speed | 126 links with chain lock
1x SHIMANO battery BT-DN300 internal
1x SHIMANO E-Tube cable for Di2 EW-SD300-I | 600mm
1x SHIMANO E-Tube cable for Di2 EW-SD300-I | 1200mm
1x SHIMANO charging cable EW-EC300
WITHOUT BOTTOM BRACKET
Notice:
The delivery takes place without rear brake disc adapter. Please check whether your frame requires a flat mount adapter to use 160 mm rear brake discs. You can find the right adapter under "matching products".
You can find any tools and assembly accessories you may need in our shop.
You can find the bleeding kit and brake fluid required to connect the brakes in our shop.
SHIMANO Mounting Screw for Flat Mount Brake Caliper/Adapter | Type Cavailable from stock
SHIMANO Professional Bleed Kit for Disc Brakes TL-BR001/TL-BR002/TL-BR003available from stock
SHIMANO Ultegra Disc Brake Rotor Center Lock RT-CL800 | 140 mm IceTech FREEZAavailable from stock